Compression fluid dampers

Abstract

This utility model relates to a compressible liquid damping shock absorber, comprising a tube-end housing and a rod-end housing; the tube-end housing and the rod-end housing are telescopically connected, serving protective and dustproof functions. A piston rod is disposed in the rod-end housing, and a cylinder is disposed in the tube-end housing, the cylinder and the piston rod being telescopically connected; a piston assembly is disposed at the section of the piston rod extending into the cylinder, and a skeleton assembly is disposed along the inner edge of the cylinder end near the piston rod, wherein the skeleton assembly is used to protect the sealing ring from damage during excessive stretching. This compressible liquid damping shock absorber extends the service life of the damper, has a large damping force, and a fast dynamic response. It provides damping force at low speeds while ensuring that high-speed damping is not excessive. Furthermore, it has a compact, symmetrical structure, requires little installation space, and has more rational force distribution.

Description

Technical Field

[0001] This utility model belongs to the technical field of damping shock absorbers, specifically a compressed liquid damping shock absorber. Background Technology

[0002] A damper is a device that provides resistance to motion and dissipates kinetic energy. Using damping to absorb energy and reduce vibration is not a new technology; various types of dampers (or shock absorbers) have long been used in industries such as aerospace, aviation, military, firearms, and automobiles for vibration reduction and energy dissipation. Hydraulic dampers are vibration control devices that are highly responsive to speed.

[0003] Hydraulic dampers are mainly suitable for vibration control of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc. They are commonly used to control impact fluid vibrations (such as rapid closure of main steam valves, safety valve discharge, water hammer, pipe rupture, and other impact disturbances) and seismic disturbances in piping systems. However, hydraulic dampers cannot effectively control low-amplitude high-frequency or high-amplitude low-frequency vibrations. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given the following technical problems in the existing technology: hydraulic dampers are mainly suitable for vibration resistance of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc. They are often used to control impact fluid vibrations (such as rapid closure of main steam valves, safety valve discharge, water hammer, pipe rupture and other impact disturbances) and seismic disturbances in pipeline systems; hydraulic dampers cannot effectively control low-amplitude high-frequency or high-amplitude low-frequency vibrations.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a compression fluid damping shock absorber, including a tube end housing and a rod end housing;

[0007] The tube end housing and the rod end housing are telescopically connected, wherein the tube end housing and the rod end housing serve as protection and dustproof, the rod end housing is equipped with a piston rod, and the tube end housing is equipped with a cylinder, the cylinder and the piston rod are telescopically connected;

[0008] The piston rod is provided with a piston assembly at the section that extends into the cylinder, and a skeleton assembly is provided on the inner edge of the cylinder near the piston rod end, wherein the skeleton assembly is used to protect the sealing ring from damage when overstretched.

[0009] The piston assembly consists of a piston guiding mechanism, a one-way damping mechanism, and a fixing and locking mechanism, wherein the piston guiding mechanism and the one-way damping mechanism are located within the fixing and locking mechanism.

[0010] As a preferred technical solution for the compression fluid damping shock absorber, a compression spring is jointly configured in both the tube end housing and the rod end housing, and the compression spring surrounds the outer periphery of the cylinder and the piston rod.

[0011] As a preferred technical solution for a compressive fluid damping shock absorber, the piston guide mechanism includes a piston gasket, a piston guide, and a copper washer. The piston guide is responsible for ensuring that the piston assembly can move parallel within the cylinder when the damper extends or retracts. The piston gasket is used to support the piston guide. The piston guide is located on the outer periphery of the piston rod, the piston gasket is located on the inner edge of the piston guide, and the copper washer is located at the end of the piston guide facing the one-way damping mechanism.

[0012] As a preferred technical solution for a hydraulic damping shock absorber, the unidirectional damping mechanism includes an O-ring, a gasket, and a valve plate. The copper gasket ensures that the O-ring is always in a flat state and can also accelerate the movement and sealing of the O-ring. The copper material can also effectively protect the cylinder from scratches. The gasket is used for support. The valve plate is configured at the inner edge of the fixing and locking mechanism. The gasket is located on the other side of the valve plate. The O-ring is movably configured between the copper gasket and the gasket.

[0013] As a preferred technical solution for the compression fluid damping shock absorber, the fixing and locking mechanism includes a locking nut and a locking washer. The locking nut is located on the side of the piston guide away from the copper washer, and the locking washer is located on the side of the valve plate away from the damping washer.

[0014] The beneficial effects of this utility model are:

[0015] This compressed fluid damping shock absorber extends the service life of the damper, has a large damping force, and a fast dynamic response. It provides damping force at low speeds while ensuring that the damping at high speeds is not excessive. It also has a compact and symmetrical structure, requiring little installation space and resulting in more reasonable stress distribution.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the piston assembly of this utility model.

[0020] Figure 3 This is a schematic diagram of the extended and compressed states of this utility model.

[0021] Figure 4 This is a cross-sectional schematic diagram of the piston assembly of this utility model.

[0022] Figure label:

[0023] 100. Tube end housing; 200. Rod end housing; 300. Cylinder; 400. Piston rod; 500. Compression spring; 600. Skeleton assembly; 700. Piston assembly; 701. Locking nut; 702. Piston gasket; 703. Piston guide; 704. Copper washer; 705. O-ring; 706. Resistance gasket; 707. Valve plate; 708. Locking gasket. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] Example

[0029] Reference Figure 1 A compressible hydraulic damping shock absorber includes a tube end housing 100 and a rod end housing 200; the tube end housing 100 and the rod end housing 200 are telescopically connected, wherein the tube end housing 100 and the rod end housing 200 serve as protection and dustproof, a piston rod 400 is disposed in the rod end housing 200, and a cylinder 300 is disposed in the tube end housing 100, the cylinder 300 and the piston rod 400 being telescopically connected; a compression spring 500 is jointly disposed in the tube end housing 100 and the rod end housing 200, the compression spring 500 surrounding the outer periphery of the cylinder 300 and the piston rod 400;

[0030] Reference Figure 2 and 4 A piston assembly 700 is installed at the end of the piston rod 400 that extends into the cylinder 300. A skeleton assembly 600 is installed on the inner edge of the cylinder 300 near the piston rod 400. The skeleton assembly 600 is used to protect the sealing ring from damage during excessive stretching. The piston assembly 700 consists of a piston guiding mechanism, a one-way damping mechanism, and a fixing and locking mechanism. The piston guiding mechanism and the one-way damping mechanism are located within the fixing and locking mechanism. The piston guiding mechanism includes a piston gasket 702, a piston guide 703, and a copper washer 704. The piston guide 703 is responsible for ensuring that the piston assembly 700 can move parallel within the cylinder 300 during the extension and retraction of the damper. The piston gasket 702 supports the piston guide 703. The piston guide 703 is located on the outer periphery of the piston rod 400, and the piston gasket 702 is located on the inner edge of the piston guide 703. The copper washer 704 is located at the end of the piston guide 703 facing the one-way damping mechanism. The one-way damping mechanism includes an O-ring 705, a stop washer 706, and a valve plate 707. The copper washer 704 ensures that the O-ring 705 is always in a flat state and can also accelerate the movement and sealing of the O-ring 705. The copper material can also effectively protect the cylinder 300 from scratches. The washer is used for support. The valve plate 707 is located at the inner edge of the fixing and locking mechanism. The stop washer 706 is located on the other side of the valve plate 707. The O-ring 705 is movably arranged between the copper washer 704 and the stop washer 706. The fixing and locking mechanism includes a locking nut 701 and a locking washer 708. The locking nut 701 is located on the side of the piston guide 703 away from the copper washer 704, and the locking washer 708 is located on the side of the valve plate 707 away from the stop washer 706.

[0031] The above can achieve the following:

[0032] During stretching, the O-ring 705 moves downward, creating a gap between the O-ring 705 and the gasket 706. Hydraulic oil flows through this gap to the piston rod 400, preventing resistance from the piston assembly 700 during stretching. During compression, the O-ring 705 rises, sealing the gap between the gasket 706 and the cylinder 300. Hydraulic oil can only flow into the lower chamber by pushing the valve plate 707 through the small holes on the gasket 706. The damping force is adjusted by changing the number and thickness of the valve plates 707. At low speeds, the damping force can flow through the gaps between the slotted valve plates 707. As the speed changes, the damping force increases, and the hydraulic oil pushes open the valve plates 707. The opening and closing size of the valve plates 707 is proportional to the damping force, preventing instantaneous locking caused by a surge in damping force due to excessive speed in traditional dampers, which could damage the equipment. The locking gasket 708 protects the valve plates 707 from leaks caused by unevenness on the end face of the locking nut 701 when the locking nut 701 is tightened.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A compression fluid-damped shock absorber characterized by: Includes a tube end housing (100) and a rod end housing (200); The tube end housing (100) and the rod end housing (200) are telescopically connected. A piston rod (400) is disposed in the rod end housing (200), and a cylinder (300) is disposed in the tube end housing (100). The cylinder (300) and the piston rod (400) are telescopically connected. A piston assembly (700) is provided on a section of the piston rod (400) that extends into the cylinder (300), and a skeleton assembly (600) is provided on the inner edge of the cylinder (300) near the piston rod (400). The piston assembly (700) consists of a piston guide mechanism, a one-way damping mechanism, and a fixed locking mechanism, wherein the piston guide mechanism and the one-way damping mechanism are located within the fixed locking mechanism.

2. The compression hydraulic damping shock absorber of claim 1, wherein: A compression spring (500) is provided in both the tube end housing (100) and the rod end housing (200), and the compression spring (500) surrounds the outer periphery of the cylinder (300) and the piston rod (400).

3. The compressible fluid damping shock absorber according to claim 1, characterized in that: The piston guiding mechanism includes a piston gasket (702), a piston guide (703), and a copper washer (704). The piston guide (703) is located on the outer periphery of the piston rod (400), the piston gasket (702) is located on the inner edge of the piston guide (703), and the copper washer (704) is located at the end of the piston guide (703) facing the one-way damping mechanism.

4. The compressible fluid damping shock absorber according to claim 1, characterized in that: The unidirectional damping mechanism includes an O-ring (705), a damping washer (706), and a valve plate (707). The valve plate (707) is disposed at the inner edge of the fixing and locking mechanism, and the damping washer (706) is located on the other side of the valve plate (707). The O-ring (705) is movably disposed between the copper washer (704) and the damping washer (706).

5. The compressible fluid damping shock absorber according to claim 1, characterized in that: The fixing and locking mechanism includes a locking nut (701) and a locking washer (708). The locking nut (701) is located on the side of the piston guide (703) away from the copper washer (704), and the locking washer (708) is located on the side of the valve plate (707) away from the stop washer (706).

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